Holddown for lasting-machines



M. BROOK.

HOLDDOWN FOR LASTING MACHINES. APPLICATION FILED JULY 30.1911.

1 ,33 1 6 l 6 Patented Feb. 24, 1920.

UNIT STATES PATENT OFFICE.

MATTHIAS BROOK, BOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS,

T0 UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A COR- ]?OB-ATION OF NEW JERSEY.

Specification of Letters Patent.

Patented Feb. 24, 1920.

Application filed July 30, 1917. Serial No. 183,500.

To all whom it may concern:

chines, of which the following description,

in connection with the accompanying drawings, is a specification, like reference charact rs on the drawings indicating like parts in the several figures This invention relates to lasting machines and particularly to means for holding the work in bed lasting machines.

The invention is shown, by way of illustration, as embodied in a hold-down of the general type disclosed and claimed in United States Letters Patent No. 1,218,783, granted March 13, 1917, on application of L. H. Larsen. In the mechanism shown in this patent an arm is provided which is movable over a shoe supported in the lasting machine and carries a pressing member or hold-down plate which is shaped in edge contour to the characteristic outline of a right or a left shoe toe and of suitable size to fit snugly behind the rib of an innersole. The pressing memher is detachable from its support for substitution of a member of dilferent shape and is adapted to be attached to its. support with either pressing face toward the sole.

Objects of this invention are to provide an improved pressing member and improved means for holding the pressing member upon its support so that it may be quickly and conveniently attached to and detached from its support.

A feature of the invention consists in a pressing member and a supporting arm therefor having interengaging parts constructed and arranged so that they will be held from separation when they are in relative position for operation of the pressing member and may be separated by relative rotation of one of the parts about an axis extending later ally of the other part followed by bodily movement of one of the parts. These relative movements cannot take place when the parts are in normal operative position, that is, with the arm substantially horizontal and the pressing face of the member against an innersole and consequently the member and arm are then securely held together. Preferably the arm is provided with a hooked stud and the pressing member has a portion formed to enter the hook when the member is in one position relatively to the arm, the hook and member being formed to prevent their separation when the member is turned to another position relatively to the arm. As shown herein the member is attachable to the hook when held in a plane substantially perpendicular to the arm and is held to the arm when moved to a position substantially parallel to the arm.

Another feature of the invention consists in means for preventing accidental relative movement of the arm and member, such as is necessary for their separation, which means is readily releasable to permit such movement when the member is to be re,- moved from the arm. As shown herein a clip is arranged for movement lengthwise of the arm and has tongues adapted to engage the pressing member and prevent movement of the memberin the direction required to effect its separation from the arm while at the same time permitting a. rotative movement of the member in the plane of the sole to insure bearing of its edge face against the rib of the innersolc.

During the lasting operation considerable pressure has to be sustained by the edgefaceof the pressing member by reason of the foreing of the upper against it by the inward movement of the wipers. A further feature of the invention consists in means to hold the pressing member from slipping rearwardly relatively to the innersole in response to this pressure. As shown, pointed projections are provided on the innersole engaging face of the pressing member to penerate the innersole and prevent the member from slipping.

These and other features of the invention will appear more fully from the following detailed description, when read in connection with the accompanying drawings, and will be pointed out in the appended claims.

In the drawings;-

Figure 1 is a perspective view of a holddown embodying this invention in operative position upon a shoe supported in a lasting machine Fig. 2 is a side view, partly in section, of the arm and pressing member, portions of the shoe being shown in dotted lines; and

Fig. 8 is a perspective view of the presser member. 7 V

The mechanism shown is adapted for use in connection with the toe lasting head of a commercial type of bed lasting machine such, for example, as that shown in United States Letters Patent No. 1,018, L77, granted February 27, 191 on my application.

In the drawings, the toe rest of the lasting machine which supports the shoe dur ing the lasting operation is shown at it. The operating mechanism for the hold-down is substantially similar to that disclosed and fully described in United States Letters Patent No. 1,120,822, granted December 15,

19M, on. application of E. L. Keyes, to

which reference may be had for details not hereingiven. A head'S is mounted for rotation on a post (5 and supports a carrier 10 mounted to slide endwlse therein. The

carrier 10 may, therefore, be swung over the shoe bottom and adjusted .endwise vtransversely of the shoe. At the end of the carrier a block 16 fixed to the end of a torsion spring l8,which extends longitudinally vthrough the carrier and is held against rotation at: its rear end, the construction in this respect being similarto that disclosed and claimed in United States Letters Patent 1 0. 1,188,l03, granted June 27,- 1916, upon application of Louis M. Brown. The block 16 is slotted. to receive an arm 12 which is held in the block by a screw 14; (Fig. 2) the upper portion of which is threaded and the lower portion adapted to enter a hole in the arm 12. By partially withdrawing the screw the arm 12 may be removed. On the end of the arm 12 which extends toward the toe of the shoe supported in the lasting machine is a stud'ZO having a lateral projection 22 which is resilient and is bent slightly toward the arm. The stud 20 and projection 22, therefore, constitute a spring hook adapted for holding to. the arm a pressing member or hold-down plate 24, as will be hereinafter fully explained. The pressing member or hold-down plate 24 has an edge face 26 contoured to fit behind the rib of an innersole" and a pressing face 28 adapted to bear upon the portion of the bottom of the inner-sole which. lies adjacent tothe rib. As shown, this pressing face is upwardly and inwardly inclined from the corner of the edge face, forming an .acute angle between the bottom and edge faces which fits the depression in the innersole usually found just inside the rib and caused .by the cutting of the channel and turning up the lip'to form the rib of the innersole. The

central. rear portion oi the plate is cut away at 30, giving the plate roughly the shape of a horse shoe. -At the inner portion 2 of its toe end the plate 24 is provided with nersole, the edgeof the hole 32 is in position to engage the stud 20 if the .plate is forced rearwardly. At the same time the forward and downward movement are prevented by engagement of the bar 36 with the stud20 and with the projection 22, respectively. The end portion of the arm 12 rests in a recess 38 in the plate 2% and applies downwardpressure to the plate. The walls of the recess prevent undue rotation of the plate on the stud 20 and, of course,

i the contact of the end of the arm with the bottom of the recess limits counterclockwise rotation of the plate about the bar .36. R0- tation in the opposite direction or clockwise is permitted, however, when the plate is raised from the shoe bottom, by reason of the cutting away of the plate at 30. The bar 36 forms, therefore, an axis extending laterally .of the arm #12 and of the plate 2 1 about which the plate may :be rotated in a clockwise direction, and when thus moved 90 fromits operative position it may be de tached .by .a bodily rearward movement to free the projection 22 from the bar 36. The hole ,32. is, of course, suiiiciently large to allowit to pass by the lower corner of the stud 20. i

The opening between the .end of the projection 22 and the arm 12 is preferably less than the thickness of the bar 36 so that the projection has .to be sprung slightly to allow the bar to pass in or out; This construction prevents accidental detachment of the plate from the'arm. The ,pointot' support of the plate 24: formed the bar36 is located fori-vardly ofits center of gravity so that the plate tends norm-ally to remain in operative position substantially parallel with the innersole. It will be noted that with this construction the pressing member cannot be pulled oil of its supporting arm should the plate be caused .to stick to the innersole by reasono f the hardening of the cement sometimes used in the toecap and caused to ooze out and adhere to the innersole and plate during the lasting operation.

NVhile the construction described is operative for the purpose intended, it is desirable to provide means for preventing the pressing member from flopping about and becoming misplaced or. detached from the arm when the carrier 10 is thrown back to its inoperative position. Accordingly, a clip 4.61s provided which is arranged to slide on rear ends of the plate to prevent upward movement of these ends and hold the plate in operative position. On the under side of the clip is a tongue 49 which is bent upwardly frictionally to engage the arm 12 andhold the clip from moving too freely along the arm. /Vhen the clip is slid rearwardly on the arm, the plate 24 is, of course, free to be detached in the manner explained.

On the sole engaging face of the plate 24 pointed projections 50 are provided which penetrate the surface of the innersole and prevent slipping of the plate rearwardly. When the upper is forced in by the wipers the edge face of the plate is subjected to considerable rearward pressure and the projection 50 provides an effective means for preventing any slipping of the plate in response to such pressure.

In lasting shoes having pronounced right and left characteristics, lasting machines are provided with two pairs of wipers for each style of last, one pair for lasting right shoes and the other pair for lasting left shoes. Preferably a hold-down plate is provided for each pair of wipers, each plate being carefully ground to correspond to the shape of the wipers with which it is intended to cooperate, one plate being employed when one pair of wipers is in use, and the other plate when the other pair of wipers is in use. This equipment renders necessary convenient means for attaching and detaching plates so that they may be quickly changed to correspond with the wipers in use, and such means is afforded by mechanism embodying this invention. It is obvious, of course, that a similar result may be effected by providing a single plate having two pressing faces which may be attached to its support with either side facing the sole, as is disclosed in the patent first above mentioned.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a hold-down for lasting machines, a supporting arm and a pressing member having interengaging portions constructed and arranged to enable them to be attached and detached only by relative rotation of one of the parts about an axis extending transversely of the other part.

2. In a hold-down for lasting machines, a supporting arm and a pressing plate, means for detachably connecting the arm and pressing plate together comprising a bar and a hook constructed and arranged so that separation of the parts may be effected by relative movement of the parts including rotation about the axis of the bar.

3. In a hold-down for lasting machines, a supporting arm and a plate, said arm and plate being constructed and arranged for detachment by relative rotation of the plate and arm on an axis lying'transversely of the arm followed by a relative movement of translation longitudinally of the arm.

-l. A lasting machine hold-down device comprising a carrier movable over a shoe supported by a lasting machine, an arm on said carrier provided with a stud having a lateral projection on'its end, and a pressing member having an opening to engage the stud, the parts being so constructed and arranged that the member will be held to the arm when in operative position and separa tion of the plate and arm may be effected only by movement including relative rotation of the member and arm about an axis extending transversely of the arm.

5. In a hold-down for lasting machines, a supporting arm movable over a shoe bottom, a hook on the arm, a pressing member having a part formed to engage the hook when the member is held in one angular position relative to the arm, separation of the arm and member being prevented when the member is moved to another angular position relative to the arm after engagement with the hook until the parts are returned to the first position.

6. In a hold-down for lasting machines, a supporting arm movable over a shoe bot-tom, a hook on the arm, apressing member hav ing a part formed to engage the hook when the member'is held in a plane substantially perpendicular to the arm, the parts being constructed and arranged to hold the member on the arm when the member is in a plane substantially parallel to the arm.

7. In a hold-down for lasting machines, a supporting arm movable over a shoe bottom, a yielding hook on the arm. a pressing member, and means on the member for attaching the member to the hook on the arm, said means being adapted to be forced into the hook by causing the hook to yield.

8. In a hold-down for lasting machines, a supporting arm movable over a shoe bottom, a hook on the arm, a horseshoeshaped pressing member having an opening in the inner portion of its toe end adapted to engage the hook when the member is held at a substantial angle to the arm, the hook holding the member to the a m when the member is moved to a position substantially parallel with the arm.

9. A hold-down for lasting machines comprising a supporting arm, a pressing plate, interengaging means on the arm and plate constructed and arranged to effect detachment of the plate from the arm only by relative movement of the parts including rotation of one of the parts about an axis extending transversely of the other.

10. A hold-down for lasting machines comprising a supporting arm, a pressing plate,

. inter-engaging means on the arm and plate constructed and arranged to effect attach.- ment of the plate to the arm by relative movement of the partsincluding rotationof one of theparts about an axis extending transversely of the other, and means movable on the arm into and out of position to hold the arm and plate against reverse rela- .tive movement of the plate and arm for detachment of the plate from the arm.

11. A hold down for lasting machines comprising a supporting arm, a pressing plate, interengaging means on the arm and plate constructed and arranged to eflect attach;

ment of the plate to the arm by relative movement of the parts including rotation of .one of the parts about an axis extending transversely of the other, and a clip slidable on the arm into and out of position to engage the rear end of the plate to hold the plate from rotation to effect separation of the plate and arm and permitting rotation [of the plate in its ownjplane.

I prevent slipping of the the plate in response to inward hold the plate against said, later rotation to a pressing plate connected to said arm and having a face toengage an extended area of the bottom of the toe portion of the innersole, and pointed projections on said face to plate on the innersole in anydirection,

14. A hold-down for lasting machines comprising an arm movable over a shoe bottom, a pressing plate on said arm having a face inclined to the generalplane of the shoe bottom and adapted to engage the depression in the innersole at the base of the rib of the innersole, and projections on said face positively to prevent rearward slipping of pressure on the outside of the innersole rib.

15. Ahold-down forlasting machines comprising an arm movable over a shoe bottom,

a pressing plate attached to saidarm and having an edge face to engage the inner-face of the innersole rib, and a pressing face to engage the bottom of the innersole inside the rib, and means on said pressing face to hold the plate against rearward movement in response to pressure of the rib by the lasting Wipers against the edge :Eaceof the plate.

In testimony whereof 1 have signed my name to this specification.

' MATTHIAS BROOK. 

